Serious flooding hits North Dakota

People ride through the flooded streets of Oxbow, North Dakota.
(Scott Olson/Getty Images)

Volunteers in Fargo spent Wednesday sandbagging as quickly as they could as estimates of how high the Red River would crest were raised. Donald Schwert, Professor of Geology at North Dakota State University in Fargo, joins John to explain why the area is so vulnerable to floods, and Todd McDonald, a reporter for Prairie Public Radio, will describe how the city is coping.